170716-N-MD297-244 CALLAO, Peru (July 16, 2017) Master Chief Petty Officer of the Navy Steven S. Giordano looks through a periscope aboard the Peruvian navy submarine BAP Angamos (SS 31) in Callao, Peru, during UNITAS 2017. The annual multi-national exercise that focuses on strengthening our existing regional partnerships and encourages establishing new relationships through the exchange of maritime mission-focused knowledge and expertise through the exercise. (U.S. Navy photo by Mass Communication Specialist 2nd Class Huey D. Younger Jr./Released)